Lubricating system for gas-engines.



J. P. FARNAM LUBRIOATING SYSTEM FOR GAS ENGINES.

APPLICATION FILED FEB. 9, 1912.

Patented Nov. 4, 1913.

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Specification of Letters ?8.te11'l1.

Application filed February 9, 1912. Serial no. eraser.

To all whom it may concern:

Be it known that 1, Jonas P. Fannan, of Minneapolis, Hennepin county, Minnesota, have invented certain new and useful Improvements in Lubricating Systems for Gas-Engines, of which the following is a specification.

The object of my invention is to provide a gas eng' 1e lubricating apparatus of simple, economical construction and one which willcause the thorough lubrication of the bearing in the crank case.

My invention consists generally in various constructions and combinations, all as hereinafter described and particularly pointed out in the claims.

In the accompanying drawings forming part of this specification, Figure 1 is a side view of a gas engine with my invention applied thereto, Fig. 2 is a transverse sectional view ofthe crank case, Figs. 3 and 4 are detail sectional views of the mechanism for elevating and distributing the oil on the bearings.

In the drawing, 2 represents the frame, whereon the engine 3 is mounted. The engine herein shown is of the -cylinder type, having the usual circulating pipes a and manifold 5 and valves 6 and 7.

'8 is the crank case and 9 a crank mounted therein. The crank case has preferably a central bearing 10 for the crank shaft and the eno. bearings 11 with connecting rods 12 extendingfrom the cranks on the shaft to the pistons of the cylinder above.

13 is a cam shltft journaled near the crank and having cams 1 1' thereon controlling the operation of the, cylinder valves and also provided with cams 15. The cam 15 is arranged to contact with the upper end of a pipe 16 that is slidable within a sleeve 17 'i'mounted in the bottom of the crank case and adapted to receive at its lower end the threaded upper end of a pipe 18. The lower end of the pipe 18 is connected through a horizontal pipe 19 with an oil reservoir 20 that is disposed beneath the crank case, said pi e 19 having a check valve 21 therein. A;

to e 22 is attached to the lower end of the pipe lfiand telescopes with the pipe 18 and is provided at 'its lower end with a check valve 23. The pipe 16 and its connections are normally held in their raised position by a spring 24 and the-wall of the said pipe reservoir.

16 has holes therein. lVhen the cam 15 revolves the pipe 16 will be forced downwardly against the tension of its spring, causing the oil in the pipe 18 to flow up into the tube 22 and fill it and the pipe Then as the high part of the cam 1 5 moves out of en 'tgement with the pipe 16 t e said pipe w ll be lifted by the tension or" the spring E l, the check valve 3 will close anl retain the oil in the column above, and upon the next revolution of the cam the depression of the pipe 16 will cause the oil therein to be sprayed out through the ports 25 upon the bearings oiithe crank shaft and the connecting rods.

I have shown two of these lubricating devices in the crank case, one on each side of the center of the crank shaft and as they are substantially identical a description of one will sufiice for both. When the pipe 16 rises the weight of the oil in the reservoir 20 will cause it to flow through the pipe 19 into pipe 18, maintaining a constant supply of oil therein. When the check valve 23 descends, the check valve 21 will close and prevent the escape of the oilback into the Oil wells 26 are provided in the bottom of the crank case with overflow pipes 27 leading therefrom to a return pipe 28 which communicates with the top of the reservoir 20. The oil in these wells is lifted and thrown into the bearings in the manner common to splash lubrication.

I claim as my invention: J

1. The combination, with a crank case and crank shaft, of a cam shaft and a cam thereon, anoil reservoir, an overflow pipe leading fromthe bottom of said crank case to said reservoir and through which the oil flows by gravity back to said reservoir, a pipe communicating with the lower portion of said reservoir andhaving a check valve therein, a second pipe in the path of said cam and telescoping with said first named pipe and having ports in its walls within said crank case, a spring for normally holdingsaid second-named pipe in its raised position, said second named pipe having a check valve, the revolution of said cam, shaft operating to depress said second namedpipe, open its check valves and fill the pipe with oil to be sprayed therefrom upon the second engagement of said cam with said second named pipe.

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2. The combination, with a gas engine crank ease and a crank shaft journaled therein, of a cam shaft and cams mounted thereon, an oil reservoir disposed below the level of said crank case and having a pipe connection therewith, feed pipes projecting upwardly into said crank case and having their lower ends connected with the lower portion of said reservoir, check valves in said pipes arranged to allow the oil to flow from said reservoir and seek its level in said pipes, and spring actuated plungers mounted in said pipes and having check valves therein, said last named check valves allowing the oil to flow upwardly into said plungers upon their initial depression, the rais-.

ing of said plungers' closing said check valves, and the second depression of said plungers operating to discharge the Oil therefrom into said crank case.

3. The combination, with a gas engine crank case and a crank shaft, of a 'cam shaft and cams mounted thereon, an oil reservoir arranged below the level of said crank case and having an overflow pipe connection therewith, a feedpipe connected with said crank case and with the lower portion of said reservoir, means arranged to allow vthe oil to flow from said reservoir and seek its level in said pipe, and a pum device operating to force the oil upward y a predetermined distance on its initial stroke and deliver the oil to-said crank case on its second stroke.

In Witness whereof, I have hereunto set my hand this 30 day of January 1912. r

' JULIAN P. FARNAML Witnesses:

GENEVIEVE E. SORENSEN, C. H. Rnnrnss. 

